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Segura-García I, Olson JB, Gochfeld DJ, Brandt ME, Chaves-Fonnegra A. Severe hurricanes increase recruitment and gene flow in the clonal sponge Aplysina cauliformis. Mol Ecol 2024; 33:e17307. [PMID: 38444224 DOI: 10.1111/mec.17307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 03/07/2024]
Abstract
Upright branching sponges, such as Aplysina cauliformis, provide critical three-dimensional habitat for other organisms and assist in stabilizing coral reef substrata, but are highly susceptible to breakage during storms. Breakage can increase sponge fragmentation, contributing to population clonality and inbreeding. Conversely, storms could provide opportunities for new genotypes to enter populations via larval recruitment, resulting in greater genetic diversity in locations with frequent storms. The unprecedented occurrence of two Category 5 hurricanes in close succession during 2017 in the U.S. Virgin Islands (USVI) provided a unique opportunity to evaluate whether recolonization of newly available substrata on coral reefs was due to local (e.g. re-growth of remnants, fragmentation, larval recruitment) or remote (e.g. larval transport and immigration) sponge genotypes. We sampled A. cauliformis adults and juveniles from four reefs around St. Thomas and two in St. Croix (USVI). Using a 2bRAD protocol, all samples were genotyped for single-nucleotide polymorphisms (SNPs). Results showed that these major storm events favoured sponge larval recruitment but did not increase the genetic diversity of A. cauliformis populations. Recolonization of substratum post-storms via clonality was lower (15%) than expected and instead was mainly due to sexual reproduction (85%) via local larval recruitment. Storms did enhance gene flow among and within reef sites located south of St. Thomas and north of St. Croix. Therefore, populations of clonal marine species with low pelagic dispersion, such as A. cauliformis, may benefit from increased frequency and magnitude of hurricanes for the maintenance of genetic diversity and to combat inbreeding, enhancing the resilience of Caribbean sponge communities to extreme storm events.
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Affiliation(s)
- Iris Segura-García
- Harbor Branch Oceanographic Institution, Florida Atlantic University, Fort Pierce, Florida, USA
| | - Julie B Olson
- Department of Biological Sciences, University of Alabama, Tuscaloosa, Alabama, USA
| | - Deborah J Gochfeld
- National Center for Natural Products Research, University of Mississippi, Oxford, Mississippi, USA
| | - Marilyn E Brandt
- Center for Marine and Environmental Studies, University of the Virgin Islands, St. Thomas, Virgin Islands, USA
| | - Andia Chaves-Fonnegra
- Harbor Branch Oceanographic Institution, Florida Atlantic University, Fort Pierce, Florida, USA
- Harriet L. Wilkes Honors College, Florida Atlantic University, Jupiter, Florida, USA
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Monti M, Giorgi A, Easson CG, Gochfeld DJ, Olson JB. Transmission studies and the composition of prokaryotic communities associated with healthy and diseased Aplysina cauliformis sponges suggest that Aplysina Red Band Syndrome is a prokaryotic polymicrobial disease. FEMS Microbiol Ecol 2021; 97:6472236. [PMID: 34931677 DOI: 10.1093/femsec/fiab164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 12/17/2021] [Indexed: 11/15/2022] Open
Abstract
Aplysina cauliformis, the Caribbean purple rope sponge, is commonly affected by Aplysina Red Band Syndrome. This transmissible disease manifests as circular lesions with red margins and results in bare spongin fibers. Leptolyngbya spp. appear to be responsible for the characteristic red coloration but transmission studies with a sponge-derived isolate failed to establish disease, leaving the etiology of ARBS unknown. To investigate the cause of ARBS, contact transmission experiments were performed between healthy and diseased sponges separated by filters with varying pore sizes. Transmission occurred when sponges were separated by filters with pore sizes ≥2.5 μm, suggesting a prokaryotic pathogen(s) but not completely eliminating eukaryotic pathogen(s). Using 16S rRNA gene sequencing methods, thirty-eight prokaryotic taxa were significantly enriched in diseased sponges, including Leptolyngbya, whereas seven taxa were only found in some, but not all, of the ARBS-affected sponges. These results do not implicate a single taxon, but rather a suite of taxa that changed in relative abundance with disease, suggesting a polymicrobial etiology as well as dysbiosis. As a better understanding of dysbiosis is gained, changes in the composition of associated prokaryotic communities may have increasing importance for evaluating and maintaining the health of individuals and imperiled coral reef ecosystems.
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Affiliation(s)
- Matteo Monti
- Department of Biological Sciences, The University of Alabama, 300 Hackberry Lane, Tuscaloosa, AL 35487, USA
| | - Aurora Giorgi
- Department of Biological Sciences, The University of Alabama, 300 Hackberry Lane, Tuscaloosa, AL 35487, USA
| | - Cole G Easson
- Biology Department, Middle Tennessee State University, P.O. Box 60, Murfreesboro, TN 37132, USA
| | - Deborah J Gochfeld
- National Center for Natural Products Research, University of Mississippi, P.O. Box 1848, University, MS 38677, USA
- Department of BioMolecular Sciences, University of Mississippi, P.O. Box 1848, University, MS 38677, USA
| | - Julie B Olson
- Department of Biological Sciences, The University of Alabama, 300 Hackberry Lane, Tuscaloosa, AL 35487, USA
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Lee JH, Riding R. The 'classic stromatolite' Cryptozoön is a keratose sponge-microbial consortium. Geobiology 2021; 19:189-198. [PMID: 33325101 DOI: 10.1111/gbi.12422] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 10/08/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
Animal evolution transformed microbial mat development. Canonically inferred negative effects include grazing, disturbance and competition for space. In contrast, ancient examples of cooperation between microbial mats and invertebrates have rarely been reported. Late Cambrian (~485 million years) Cryptozoön is widely regarded as the first stromatolite to have received a taxonomic name and has been compared with present-day examples at Shark Bay, Australia. Here, we show that Cryptozoön is an interlayered consortium of keratose ('horny') sponge and microbial carbonate in roughly equal proportions. Cryptozoön's well-defined layering reflects repeated alternation of sponge and microbial mat. Its distinctive lateral growth is due to the ability of keratosans to colonize steep and overhanging surfaces. Contrary to the perception of Phanerozoic stromatolites as anachronistic survivors in a eukaryotic world, Cryptozoön suggests mutualistic behaviour in which sponges and microbial mats cooperated to gain support, stability and relief, while sharing substrates, bacteria and metabolites. Keratosan-microbial consortia may have been mistaken for stromatolites throughout the record of the past 500 million years, and possibly longer.
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Affiliation(s)
- Jeong-Hyun Lee
- Department of Geological Sciences, Chungnam National University, Daejeon, South Korea
| | - Robert Riding
- Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN, USA
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Aung PP, Parra ER, Barua S, Sui D, Ning J, Mino B, Ledesma DA, Curry JL, Nagarajan P, Torres-Cabala CA, Efstathiou E, Hoang AG, Wong MK, Wargo JA, Lazar AJ, Rao A, Prieto VG, Wistuba I, Tetzlaff MT. B7-H3 Expression in Merkel Cell Carcinoma-Associated Endothelial Cells Correlates with Locally Aggressive Primary Tumor Features and Increased Vascular Density. Clin Cancer Res 2019; 25:3455-3467. [PMID: 30808776 DOI: 10.1158/1078-0432.ccr-18-2355] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 12/04/2018] [Accepted: 02/22/2019] [Indexed: 12/19/2022]
Abstract
PURPOSE Merkel cell carcinoma (MCC) is an aggressive cutaneous malignancy whose pathogenesis and prognosis are related to the integrity of the host immune system. Despite promising clinical responses to immune-checkpoint blockade, response and resistance remain unpredictable, underscoring a critical need to delineate novel prognostic biomarkers and/or therapeutic targets for this disease.Experimental Design: Expression of immune-regulatory markers (PD-L2, B7-H3, B7-H4, IDO-1, ICOS, TIM3, LAG3, VISTA, and OX-40) was assessed using singlet chromogenic IHC in 10 primary MCCs. Multiplex immunofluorescence quantified CD31 and B7-H3 expression in 52 primary and 25 metastatic MCCs. B7-H3 and CD31 expressions were tabulated as a series of independent (X,Y) cell centroids. A spatial G-function, calculated based on the distribution of distances of B7-H3+ (X,Y) cell centroids around the CD31+ (X,Y) cell centroids, was used to estimate a colocalization index equivalent to the percentage of CD31-positive cell centroids that overlap with a B7-H3-positive cell centroid. RESULTS Primary and metastatic MCCs exhibit a dynamic range of colocalized CD31 and B7-H3 expression. Increasing colocalized expression of B7-H3 with CD31 significantly associated with increased tumor size (P = 0.0060), greater depth of invasion (P = 0.0110), presence of lymphovascular invasion (P = 0.0453), and invasion beyond skin (P = 0.0428) in primary MCC. Consistent with these findings, increasing colocalized expression of B7-H3 and CD31 correlated with increasing vascular density in primary MCC, but not metastatic MCC. CONCLUSIONS Our results demonstrate that colocalized expression of B7-H3/CD31 is a poor prognostic indicator and suggest therapies targeting B7-H3 may represent an effective approach to augmenting immune-activating therapies for MCC.
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Affiliation(s)
- Phyu P Aung
- Department of Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Edwin Roger Parra
- Department of Translational Molecular Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Souptik Barua
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas
| | - Dawen Sui
- Department of Bioinformatics and Computational Biology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jing Ning
- Department of Bioinformatics and Computational Biology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Barbara Mino
- Department of Translational Molecular Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Debora Alejandra Ledesma
- Department of Translational Molecular Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jonathan L Curry
- Department of Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | | | - Carlos A Torres-Cabala
- Department of Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Eleni Efstathiou
- Department of Genitourinary Medical Oncology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Anh G Hoang
- Department of Genitourinary Medical Oncology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Michael K Wong
- Department of Melanoma Medical Oncology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jennifer A Wargo
- Department of Surgical Oncology, the University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Genomic Medicine, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Alexander J Lazar
- Department of Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Translational Molecular Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Genomic Medicine, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Arvind Rao
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas.,Department of Bioinformatics and Computational Biology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Victor G Prieto
- Department of Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ignacio Wistuba
- Department of Translational Molecular Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Michael T Tetzlaff
- Department of Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas. .,Department of Translational Molecular Pathology, the University of Texas MD Anderson Cancer Center, Houston, Texas
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Ma LG, Chen QH, Wang YY, Wang J, Ren ZP, Cao ZF, Cao YR, Ma X, Wang BB. Spatial pattern and variations in the prevalence of congenital heart disease in children aged 4-18 years in the Qinghai-Tibetan Plateau. Sci Total Environ 2018; 627:158-165. [PMID: 29426137 DOI: 10.1016/j.scitotenv.2018.01.194] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 01/19/2018] [Accepted: 01/19/2018] [Indexed: 05/28/2023]
Abstract
PURPOSE This study aimed to investigate the spatial distribution pattern of the prevalence of congenital heart disease (CHD) in children in Qinghai-Tibetan Plateau (QTP), a high-altitude region in China. METHODS Epidemiological data from a survey on the prevalence of CHD in Qinghai Province including 288,066 children (4-18 years) were used in this study. The prevalence and distribution pattern of CHD was determined by sex, CHD subtype, and nationality and altitude. Spatial pattern analysis using Getis-Ord Gi⁎ was used to identify the spatial distribution of CHD. Bayesian spatial binomial regression was performed to examine the relationship between the prevalence of CHD and environmental risk factors in the QTP. RESULTS The prevalence of CHD showed a significant spatial clustering pattern. The Tibetan autonomous prefecture of Yushu (average altitude > 4000 m) and the Mongolian autonomous county of Henan (average altitude > 3600 m) in Huangnan had the highest prevalence of CHD. Univariate analysis showed that with ascending altitude, the total prevalence of CHD, that in girls and boys with CHD, and that of the subtypes PDA and ASD increasing accordingly. Thus, environmental factors greatly contributed to the prevalence of CHD. CONCLUSIONS The prevalence of CHD shows significant spatial clustering pattern in the QTP. The CHD subtype prevalence clustering pattern has statistical regularity which would provide convenient clues of environmental risk factors. Our results may provide support to make strategies of CHD prevention, to reduce the incidence of CHD in high altitude regions of China.
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Affiliation(s)
- Li-Guang Ma
- National Research Institute for Family Planning, Beijing 100081, PR China; Beijing GIStone Information Technology Co Ltd., Beijing 100101,PR China
| | - Qiu-Hong Chen
- Central Laboratory, Qinghai Cardiovascular Diseases Vocational Hospital, Xining, Qinghai 810012, PR China.
| | - Yuan-Yuan Wang
- National Research Institute for Family Planning, Beijing 100081, PR China
| | - Jing Wang
- Department of Medical Genetics and Developmental Biology, School of Medical Basic, Capital Medical University, Beijing 100069, PR China
| | - Zhou-Peng Ren
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Zong-Fu Cao
- National Research Institute for Family Planning, Beijing 100081, PR China
| | - Yan-Rong Cao
- Beijing GIStone Information Technology Co Ltd., Beijing 100101,PR China
| | - Xu Ma
- National Research Institute for Family Planning, Beijing 100081, PR China; Peking Union Medical College, Beijing 100730, PR China.
| | - Bin-Bin Wang
- National Research Institute for Family Planning, Beijing 100081, PR China; Peking Union Medical College, Beijing 100730, PR China.
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