PMID- 10728907 OWN - NLM STAT- MEDLINE DCOM- 20000411 LR - 20211116 IS - 0167-594X (Print) IS - 0167-594X (Linking) VI - 45 IP - 1 DP - 1999 TI - Brain derived neurotrophic factor protects human neuroblastoma cells from DNA damaging agents. PG - 27-36 AB - Neurotrophins are required for survival of neurons during development and may act as survival factors to cells undergoing stress. We tested whether brain derived neurotrophic factor (BDNF) protects neuroblastoma (NB) cells from cytotoxic agents using a model NB cell line, NB 1643, which expresses functional tropomyosin related kinase B (TRKB) following treatment with all-trans-retinoic acid. TRKB is the receptor for BDNF. BDNF increases the EC50 values in survival assays for cisplatin, doxorubicin, and topotecan by two to three fold. Thus, BDNF does indeed protect cells drugs that damage DNA. Cisplatin and doxorubicin are used to treat NB. Topotecan is in clinical studies for the treatment of NB. Since these drugs induce DNA damage, we also investigated whether BDNF might afford protection from gamma irradiation. BDNF also induces more than a two fold resistance to gamma irradiation. Since BDNF protects cells from agents with different mechanisms of damaging DNA and resistance, it seems likely that BDNF may alter a common signaling pathway required for cell death initiation by DNA damaging agents. FAU - Middlemas, D S AU - Middlemas DS AD - Department of Molecular Pharmacology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA. david.middlemas@stjude.org FAU - Kihl, B K AU - Kihl BK FAU - Moody, N M AU - Moody NM LA - eng GR - 1 R29 CA 71628/CA/NCI NIH HHS/United States GR - CA 21765/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Neurooncol JT - Journal of neuro-oncology JID - 8309335 RN - 0 (Antineoplastic Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (DNA, Neoplasm) RN - 0 (Neuroprotective Agents) RN - 7M7YKX2N15 (Topotecan) RN - 80168379AG (Doxorubicin) RN - Q20Q21Q62J (Cisplatin) SB - IM MH - Antineoplastic Agents/*pharmacology MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Cisplatin/pharmacology MH - DNA Damage/drug effects MH - DNA, Neoplasm/drug effects/radiation effects MH - Doxorubicin/pharmacology MH - Gamma Rays MH - Humans MH - Neuroblastoma/*genetics/pathology MH - Neuroprotective Agents/*pharmacology MH - Topotecan/pharmacology MH - Tumor Cells, Cultured/drug effects/radiation effects EDAT- 2000/03/23 09:00 MHDA- 2000/04/15 09:00 CRDT- 2000/03/23 09:00 PHST- 2000/03/23 09:00 [pubmed] PHST- 2000/04/15 09:00 [medline] PHST- 2000/03/23 09:00 [entrez] AID - 10.1023/a:1006342423175 [doi] PST - ppublish SO - J Neurooncol. 1999;45(1):27-36. doi: 10.1023/a:1006342423175.