Autophagy Bladder Cancer
7. juli 2020 opdateret af: Shaimaa Ramadan, Assiut University
Identification of Novel Autophagy Markers in Bladder Cancer Patients
• Bladder cancer is the most common malignancy of the urinary tract.
It represents the 7th most commonly diagnosed cancer in male population worldwide and drops to the 11th when both genders are considered .
According to the American cancer society's estimates of bladder cancer in 2017, the number of the new cases of bladder cancer is 79,030, and the mortality figures reached 16,870 .
Studieoversigt
Status
Ukendt
Betingelser
Detaljeret beskrivelse
- In Egypt, Bladder Cancer is the most prevalent malignancy among Egyptian males (16%) producing more than 7900 deaths annually . The majority of patients with bladder cancer about (70-80%) present with non-muscle invasive bladder cancer .
- Autophagy is a highly conserved catabolic process that degrades cellular organelles and proteins to maintain cellular biosynthesis during stress ; cancer cells induced autophagy to counteract with anticancer therapy by helping them to evade apoptotic pathway .Autophagy is achieved by many autophagy-related genes .
- Previous studies found that human bladder cancer cell lines exhibit high basal level of autophagic activity that may contribute to resistance to current anticancer treatment, so targeting basal autophagy may help to develop novel therapeutic strategies . Autophagy is potently induced by activating transcription factor 6(Endoplasmic Reticulum stress marker) , and Malondialdehyde (oxidative stress marker) .
- Recently several studies demonstrated the role of autophagy in Bladder Cancer progression as evidenced by detection of microtubule associated protein and its relevance with muscle invasion beside its grade dependency . Autophagy was grade dependent process . Autophagy related gene 7 is a key protein involved in autophagosomes biogenesis, Knockdown of Autophagy related gene 7 induced apoptotic cell death in bladder cancer cell lines measured by increased caspase 3 level, Based on these previous studies autophagy plays a role in bladder cancer progression so interruption of its pathway may serve a novel target for future therapies.
Undersøgelsestype
Observationel
Tilmelding (Forventet)
150
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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Assiut, Egypten, 71111
- Assiut
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
patients with confirmed bladder cancer (histopathologically) having LGBC(Low Grade bladder cancer) undergoing either TUR(transurethral resection of Bladder Tumour) or Radical Cystectomy and patients having HGBC(High Grade bladder cancer) undergoing either TUR(transurethral resection of Bladder Tumour) or Radical cystectomy.
Healthy controls[age and gender matched](with no previous history of gross hematuria, urolithiasis, or active urinary tract infection)
Beskrivelse
Inclusion Criteria:
- 1)patients confirmed histopathologically to have bladder cancer. 2) Both sexes. 3) Patients who will accept to participate in the study.
Exclusion Criteria:
- Patients with past history of Bladder Cancer with previous chemotherapy or any other types of cancer in the last 5 years.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
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Low Grade group
• 50 tumor tissue samples from patients with Low Grade Bladder Cancer undergoing either trans urethral resection of bladder tumor or Radical Cystectomy , The followings markers must be estimated :
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High Grade group
• 50 tumor tissue samples from patients with High Grade Bladder Cancer undergoing either trans urethral resection of bladder tumor or Radical Cystectomy, The followings markers must be estimated :
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Safety margin group
• 50 normal bladder urothelial tissue samples from the safety margin around the tumor(0.5cm to the tumor), The followings markers must be estimated :
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Control group
• 50 (age and sex matched )control The followings markers must be estimated :
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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autophagy marker
Tidsramme: baseline
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differences in the level of Atg7(autophagy marker) in Low Grade bladder cancer and High Grade bladder cancer groups in comparison with safety margin and healthy control group.
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baseline
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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stress markers
Tidsramme: baseline
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Relation between LC3A and muscle invasiveness in bladder cancer progression, and relation between levels of ATF6, activating transcription factor6 (ER stress marker) -MDA malondialdehyde (oxidative stress marker)-Caspase3 (apoptotic marker) in different study groups and bladder cancer development.
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baseline
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Efterforskere
- Ledende efterforsker: Shaimaa Shakhoun, Assiut
Publikationer og nyttige links
Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.
Generelle publikationer
- Mizushima N. Autophagy: process and function. Genes Dev. 2007 Nov 15;21(22):2861-73. doi: 10.1101/gad.1599207.
- Woldu SL, Bagrodia A, Lotan Y. Guideline of guidelines: non-muscle-invasive bladder cancer. BJU Int. 2017 Mar;119(3):371-380. doi: 10.1111/bju.13760. Epub 2017 Jan 24.
- Mathew R, Karantza-Wadsworth V, White E. Assessing metabolic stress and autophagy status in epithelial tumors. Methods Enzymol. 2009;453:53-81. doi: 10.1016/S0076-6879(08)04004-4.
- Kondo Y, Kanzawa T, Sawaya R, Kondo S. The role of autophagy in cancer development and response to therapy. Nat Rev Cancer. 2005 Sep;5(9):726-34. doi: 10.1038/nrc1692.
- Lin YC, Lin JF, Wen SI, Yang SC, Tsai TF, Chen HE, Chou KY, Hwang TI. Inhibition of High Basal Level of Autophagy Induces Apoptosis in Human Bladder Cancer Cells. J Urol. 2016 Apr;195(4 Pt 1):1126-35. doi: 10.1016/j.juro.2015.10.128. Epub 2015 Oct 28.
- Maiuri MC, Zalckvar E, Kimchi A, Kroemer G. Self-eating and self-killing: crosstalk between autophagy and apoptosis. Nat Rev Mol Cell Biol. 2007 Sep;8(9):741-52. doi: 10.1038/nrm2239.
- Yang ZJ, Chee CE, Huang S, Sinicrope FA. The role of autophagy in cancer: therapeutic implications. Mol Cancer Ther. 2011 Sep;10(9):1533-41. doi: 10.1158/1535-7163.MCT-11-0047. Epub 2011 Aug 30.
- Sivridis E, Koukourakis MI, Mendrinos SE, Touloupidis S, Giatromanolaki A. Patterns of autophagy in urothelial cell carcinomas--the significance of "stone-like" structures (SLS) in transurethral resection biopsies. Urol Oncol. 2013 Oct;31(7):1254-60. doi: 10.1016/j.urolonc.2011.12.016. Epub 2012 Jan 24.
- Ojha R, Singh SK, Bhattacharyya S, Dhanda RS, Rakha A, Mandal AK, Jha V. Inhibition of grade dependent autophagy in urothelial carcinoma increases cell death under nutritional limiting condition and potentiates the cytotoxicity of chemotherapeutic agent. J Urol. 2014 Jun;191(6):1889-98. doi: 10.1016/j.juro.2014.01.006. Epub 2014 Jan 15.
- Mukhopadhyay S, Sinha N, Das DN, Panda PK, Naik PP, Bhutia SK. Clinical relevance of autophagic therapy in cancer: Investigating the current trends, challenges, and future prospects. Crit Rev Clin Lab Sci. 2016 Aug;53(4):228-52. doi: 10.3109/10408363.2015.1135103. Epub 2016 Feb 16.
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Forventet)
1. december 2020
Primær færdiggørelse (Forventet)
1. oktober 2021
Studieafslutning (Forventet)
31. december 2021
Datoer for studieregistrering
Først indsendt
17. august 2017
Først indsendt, der opfyldte QC-kriterier
17. august 2017
Først opslået (Faktiske)
21. august 2017
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
8. juli 2020
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
7. juli 2020
Sidst verificeret
1. juli 2020
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- ABC (Anden identifikator: Children's Health Foundation)
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Ingen
Studerer et amerikansk FDA-reguleret enhedsprodukt
Ingen
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