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Gaiger A, Lubowitzki S, Krammer K, Zeilinger EL, Acel A, Cenic O, Schrott A, Unseld M, Rassoulian AP, Skrabs C, Valent P, Gisslinger H, Marosi C, Preusser M, Prager G, Kornek G, Pirker R, Steger GG, Bartsch R, Raderer M, Simonitsch-Klupp I, Thalhammer R, Zielinski C, Jäger U. The cancer survival index-A prognostic score integrating psychosocial and biological factors in patients diagnosed with cancer or haematologic malignancies. Cancer Med 2022; 11:3387-3396. [PMID: 35315594 PMCID: PMC9487871 DOI: 10.1002/cam4.4697] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/03/2022] [Accepted: 03/11/2022] [Indexed: 12/20/2022] Open
Abstract
Objective We aimed to investigate whether (1) psychological and social indicators influence survival in patients diagnosed with cancer or haematologic malignancies when important biological aspects are controlled for, (2) psychological, social and biological indicators can be utilised to design one collated index for survival, usable in clinical practice to identify patients at risk of shorter survival and to improve personalised healthcare provision. Methods In this cross‐sectional study, 2263 patients with cancer or haematologic malignancies participated. We analysed 15 biological, psychological and social indicators as risk factors for survival with a Cox proportional hazards model. Indicators significantly associated with survival were combined to compute models for the identification of patient groups with different risks of death. The training sample contained 1122 patients. Validation samples included the remaining 1141 patients, the total sample, as well as groups with different cancer entities. Results Five indicators were found to significantly impact survival: Cancer site (HR: 3.56), metastatic disease (HR: 1.88), symptoms of depression (HR: 1.34), female sex (HR: 0.73) and anaemia (HR: 0.48). Combining these indicators to a model, we developed the Cancer Survival Index, identifying three distinct groups of patients with estimated survival times of 47.2 months, 141 months and 198.2 months (p < 0.001). Post hoc analysis of the influence of depression on survival showed a mediating effect of the following four factors, related to both depression and survival: previous psychiatric conditions, employment status, metastatic disease and haemoglobin levels. Conclusions Psychosocial and biological factors impact survival in various malignancies and can be utilised jointly to compute an index for estimating the survival of each patient individually—the Cancer Survival Index.
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Affiliation(s)
- Alexander Gaiger
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
| | - Simone Lubowitzki
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
| | - Katharina Krammer
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
| | - Elisabeth L Zeilinger
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
| | - Andras Acel
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Olivera Cenic
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
| | | | - Matthias Unseld
- Department of Medicine I, Division of Palliative Medicine, Medical University of Vienna, Vienna, Austria
| | - Anahita Paula Rassoulian
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
| | - Cathrin Skrabs
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
| | - Peter Valent
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Haematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Heinz Gisslinger
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
| | - Christine Marosi
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Matthias Preusser
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Gerald Prager
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Gabriela Kornek
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Robert Pirker
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Günther G Steger
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Rupert Bartsch
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Markus Raderer
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | | | - Renate Thalhammer
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Christoph Zielinski
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Comprehensive Cancer Centre, Medical University Vienna - General Hospital, Vienna, Austria
| | - Ulrich Jäger
- Department of Medicine I, Division of Haematology and Haemostaseology, Medical University of Vienna, Vienna, Austria
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Germinario RJ, Colby-Germinario SP, Acel A, Chandok R, Davison K, Mak J, Kleiman L, Faust E, Wainberg MA. Effect of insulin-like growth factor I on HIV type 1 long terminal repeat-driven chloramphenicol acetyltransferase expression. AIDS Res Hum Retroviruses 1999; 15:829-36. [PMID: 10381171 DOI: 10.1089/088922299310737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In this study, we have investigated the ability of insulin-like growth factor I (IGF-I) to inhibit HIV long terminal repeat (LTR)-driven gene expression. Using COS 7 cells cotransfected with tat and an HIV LTR linked to a chloramphenicol acetyltransferase (CAT) reporter, we observed that physiological levels of IGF-I (10(-9) M) significantly inhibited CAT expression in a concentration- and time-dependent manner. IGF-I did not inhibit CAT expression in COS 7 cells transfected with pSVCAT, and did not affect CAT expression in the absence of cotransfection with tat. Transfection of HIV-1 proviral DNA into COS 7 cells +/- IGF-I resulted in a significant decrease (p < 0.05) in infectious virion production. Both IGF-I and Ro24-7429 inhibited LTR-driven CAT expression, while TNF-alpha-enhanced CAT expression was not affected by IGF-I. On the other hand, a plasmid encoding parathyroid hormone-related peptide exhibited dramatic additivity of inhibition of CAT expression in COS 7 cells. Finally, we show that in Jurkat or U937 cells cotransfected with HIVLTRCAT/tat, IGF-I significantly inhibited CAT expression. Further, interleukin 4 showed in U937 cells inhibition of CAT expression that was not additive to IGF-I induced inhibition. Our data demonstrate that IGF-I can specifically inhibit HIVLTRCAT expression. This inhibition may occur at the level of the tat/TAR interaction. Finally, this IGF-I effect is seen in target cell lines and similar paths of inhibition may be involved in the various cell types employed.
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Affiliation(s)
- R J Germinario
- Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Montreal, Quebec, Canada
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Acel A, Udashkin BE, Wainberg MA, Faust EA. Efficient gap repair catalyzed in vitro by an intrinsic DNA polymerase activity of human immunodeficiency virus type 1 integrase. J Virol 1998; 72:2062-71. [PMID: 9499061 PMCID: PMC109500 DOI: 10.1128/jvi.72.3.2062-2071.1998] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Cleavage and DNA joining reactions, carried out by human immunodeficiency virus type 1 (HIV-1) integrase, are necessary to effect the covalent insertion of HIV-1 DNA into the host genome. For the integration of HIV-1 DNA into the cellular genome to be completed, short gaps flanking the integrated proviral DNA must be repaired. It has been widely assumed that host cell DNA repair enzymes are involved. Here we report that HIV-1 integrase multimers possess an intrinsic DNA-dependent DNA polymerase activity. The activity was characterized by its dependence on Mg2+, resistance to N-ethylmaleimide, and inhibition by 3'-azido-2',3'-dideoxythymidine-5'-triphosphate, coumermycin A1, and pyridoxal 5'-phosphate. The enzyme efficiently utilized poly(dA)-oligo(dT) or self-annealing oligonucleotides as a template primer but displayed relatively low activity with gapped calf thymus DNA and no activity with poly(dA) or poly(rA)-oligo(dT). A monoclonal antibody binding specifically to an epitope comprised of amino acids 264 to 273 near the C terminus of HIV-1 integrase severely inhibited the DNA polymerase activity. A deletion of 50 amino acids at the C terminus of integrase drastically altered the gel filtration properties of the DNA polymerase, although the level of activity was unaffected by this mutation. The DNA polymerase efficiently extended a hairpin DNA primer up to 19 nucleotides on a T20 DNA template, although addition of the last nucleotide occurred infrequently or not at all. The ability of integrase to repair gaps in DNA was also investigated. We designed a series of gapped molecules containing a single-stranded region flanked by a duplex U5 viral arm on one side and by a duplex nonviral arm on the other side. Molecules varied structurally depending on the size of the gap (one, two, five, or seven nucleotides), their content of T's or C's in the single-stranded region, whether the CA dinucleotide in the viral arm had been replaced with a nonviral sequence, or whether they contained 5' AC dinucleotides as unpaired tails. The results indicated that the integrase DNA polymerase is specifically designed to repair gaps efficiently and completely, regardless of gap size, base composition, or structural features such as the internal CA dinucleotide or unpaired 5'-terminal AC dinucleotides. When the U5 arm of the gapped DNA substrate was removed, leaving a nongapped DNA template-primer, the integrase DNA polymerase failed to repair the last nucleotide in the DNA template effectively. A post-gap repair reaction did depend on the CA dinucleotide. This secondary reaction was highly regulated. Only two nucleotides beyond the gap were synthesized, and these were complementary to and dependent for their synthesis on the CA dinucleotide. We were also able to identify a specific requirement for the C terminus of integrase in the post-gap repair reaction. The results are consistent with a direct role for a heretofore unsuspected DNA polymerase function of HIV-1 integrase in the repair of short gaps flanking proviral DNA integration intermediates that arise during virus infection.
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Affiliation(s)
- A Acel
- Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital and McGill AIDS Center, McGill University, Montreal, Quebec, Canada
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Faust E, Garg A, Small L, Acel A, Wald R, Udashkin B. Enzymatic Capability of HIS-Tagged HIV-1 Integrase Using Oligonucleotide Disintegration Substrates. J Biomed Sci 1996; 3:254-265. [PMID: 11725106 DOI: 10.1007/bf02253705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Disintegration, wherein a half-site integration substrate is resolved into separate viral and host DNA components via DNA strand transfer, is one of three well-established in vitro activities of HIV-1 integrase. The role of disintegration in the HIV-1 replicative cycle, however, remains a mystery. In this report, we describe the expression in Escherichia coli and purification of HIV-1 integrase as a fusion protein containing a 6xHis tag at its amino terminus. Integrase resolved dumbbell and Y-substrates optimally at pH 6.8-7.2 in the presence of 2 mM MnCl(2). Substrate requirements for intramolecular disintegration included a 10 base pair viral U5 LTR arm and a CA dinucleotide located at the 3' end of the LTR. Disintegration was not sensitive to changes in the host DNA portion of the substrate. A dumbbell substrate with a 5' oligo-dA tail also underwent disintegration. The released LTR arm with an oligo-dA tail was utilized as a template primer by several DNA polymerases indicating that disintegration occurred via nucleophilic attack on the phosphodiester bond located immediately adjacent to the CA dinucleotide at the 3' end of the LTR. Coupled disintegration-DNA polymerase reactions provided a highly efficient and sensitive means of detecting disintegration activity. Integrase also catalyzed an apparently concerted disintegration-5'-end joining reaction in which an LTR arm was transferred from one dumbbell substrate molecule to another. Copyright 1996 S. Karger AG, Basel
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Affiliation(s)
- E.A. Faust
- Department of Medicine, McGill University, Montreal, Que., Canada
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